Pulling-over machine.



O. F. BENNION. PULLING-OVER MACHINE.

GATION TILED 11116.3, 1912.

AYPLI r0 1 9 1 r0 J d e LIU n Du t a P 4 SHEETS-SHEET 1.

THE NORRIS PETERS C0. PHOTO-LITHOU WASHINGTON, D. c

C. F. BENNION. PULLING-OVER-MAGHINE.

APPLICATION FILED AUG.3, 1912.

1,128,662., Patented Jan. 5, 1915.

4 SHEETSSHEET 2 IHE NORRIS PETERS 60.. PHOTO LI7HO.. WASHING roN, D c

G. F. BENNION.

POLLING-OVER MACHINE.

APPLIGATION FILED AUG. 2, 1912.

1,183,662)" Patented Ja11.5,1915.

4 SHEETSWSHEBT 3.

THE NORRIS PETERS C01. PHU7O LITHOH WASHING ION, D r:

G. F. BENNION,

PULLING-OVER MACHINE.

APPLIOATION FILED AUG. 3, 1912.

Patented Jan. 5, 1915.

4 SHEETSSHEET 4.

THE NORRIS PETERS C0,, PHOm-LITHQ. WASHINGTON. D C

NIED @IA Id UFFIQEQ CHARLES FAWOET'I BENNION, 0F LEICESTER, ENGLAND,ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, ACORPORATION 0E NEW JERSEY.

PULLING-OVER MACHINE.

Specification of Letters Patent.

Patented Jan. 5, 1915.

Application filed August 3, 1912. Serial No. 713,083.

To all 107mm it may concern Be it known that 1, CHARLES F. BENNION, asubject of the King of Great Britain, residing at Leicester,Leicestershire, England, have invented certain Improvements inPulling-Over Machines, of which the following description, in connectionwith the accompanying drawings, is a specification, like referencecharacters on the drawings indicating like parts in the several figures.

This invention relates to pulling-over or like machines, and moreparticularly to that wellknown type of machine in which there aremechanically actuated toe and side grippers for pulling the upperrespectively about the toe and sides of the last; and in which at asecond stage of the cycle of operations, wipers and tack carriers followup the grip pers and the upper is secured to the last by tacks drivenfrom the carriers.

It is an object of the present invention to improve machines of thistype whereby under certain conditions they may perform better work thanheretofore, particularly in connection with boots and shoes in which thetoe portions are raised considerably above the level of that portion ofthe forepart between the toe and the instep.

In the machine above" mentioned the timing of the parts is such that thetoe gripper operates slightly in advance of the side grippers to pullthe upper about the toe. In dealing with shoes that have raised toes andthat consequently have a drop or dip just behind the toe it is foundthat with the grippers operating as heretofore there is difficulty incausing the side grippers to pull the upper tightly about the last atthis drop or dip because the toe gripper strains the upper between theinstep and the raised part of the toe so as to hold the material up fromthe dip.

It is an object of the present invention to overcome this difliculty andto this end a feature of the invention is in a pulling-over or likemachine comprising toe and side grippers, operating mechanism for thegrippers so arranged that the side grippers are operated to pull orstretch the upper transversely of the last prior to an operation of thetoe gripper to pull or stretch it longitudinally of the last.Preferably. however, the toe gripper is operated to effect first apreliminary pull on the upper to position the sides of the uppercorrectly in relation to the side grippers, and it may be to draft theupper bodily forward on the last, and then after the side grippers haveclosed, to relax its pull on the upper either during or prior to theupdraw motion of the side grippers, and next to exert a final pull onthe upper to stretch it about the toe of the last.

Under some conditions the best results are obtained from a dwell orpause in the operation of the toe gripper while the side grippers pull,without relaxing the light tension with which the toe gripper initiallypulls. As I am advised, this organization of gripper operating mechanismis new.

According to a further feature of the invention the toe gripper may beactuated so that an initial tension is applied to the upper by it andthereafter the side grippers are actuated to impart tension to the upperat the sides of the shoe while the toe gripper relaxes or after it hasrelaxed its tension somewhat, and this preliminary pulling and relaxingmovement of the toe gripper and the updraw movement of the side grippersmay be repeated automatically by the gripper-actuating devices as manytimes as is requisite to bring the upper well home on the last beforethe final pull is imparted to the toe gripper. Further, if considereddesirable, between each of such repetitions the side grippers may beactuated to relax their pull, the amount of this relaxation being suchas is considered will tend to seat the upper most quickly and smoothlyto the outline of the last without straining it more than is desirable.

The invention will now be described as embodied in a machine of the typehereinbefore referred to but it is to be understood that the inventionis not limited in its application to this particular machine nor is itlimited to the constructions that are set forth herein by way of examplesince the invention could be applied to other machines and embodied inother constructions without departing from the spirit thereof.

In the accompanying drawings :-Figure 1 is a side elevation partly insection of so much of the mechanism as is concerned with the presentinvention; Fig. 2 shows the cam as in Fig. 3 but constructed accordingto the present invention; Fig. 3 shows the cam for actuating the toegripper as constructed heretofore; Figs. 4 and 5 show the modified formsof toe gripper and side gripper upllll draw cams respectively shaped toeffect repeated pulling by the side grippers, as well as by the toegrippers, with a relaxationof tension by the toe gripper each time theside gripper pulls; Fig. 6 represents a high toed last showing the upperpulled well down to the last as is done by the present construction; andFig. 7 represents a last with a raised toe showing the upper pulled asit might be in the old machine.

In the construction about to be described the grippers and theiractuating mechanism are substantially like those of the machinedescribed in the specification of United States Letters Patent No.1,029,387, granted June 11, 1912 to Ronald F. McFeely, except that thetiming of the cams for the grippers is altered so that the side gripperswill stretch the upper about the last after the toe gripper has eifecteda preliminary pull upon the upper and has relaxed its pull again. Thesegrippers comprise the toe pincers 10 and the side pincers 12 which whichare suspended respectively from the front portions of levers 11 and 13fulcrumed at 15 and yieldingly connected at their rear ends to cams 16,17 on the power driven shaft 18. In Fig. 3 is shown the cam 16 foractuating the toe gripper as previously constructed, while Fig. 2 showsthe same cam in the present construction, in which latter case it willbe noted that an additional raised portion A is provided on the camgroove. WVhen the machine starts, the gripper actuating roll is (asindicated by dot-and-dash lines) at the high portion of the cam marked Band as the cycle of operations progresses the roll is gradually movedtoward the center of the cam until it reaches C thus giving thepriliminary pull upon the toe gripper which is required. the roll nextmoves outward from the center until it reaches the highest point of theportionAwhen the toe gripper will be relaxed. The side grippers commenceoperating when the toe gripper roll reaches this point or as it isrising up the side D of the said portion and in the present instance itis preferred that they be operated at the latter time. As the camcontinues to turn, the toe gripper roll will move down the side 1 of theportion A until it has once more stretched the upper and will then pausein the position indicated by the dot-and-dash lines at H to enable theupper to be adjusted. It will then start again and stretch the upper andit will continue to keep the upper stretched as it moves around theportion F of the cam, finally releasing the tension as it moves alongthe portion G to its original position. This formation of the updraw camgives a give-and-take pull, that is, first a pull by the toe gripper,then a relaxation and a pull by the side grippers followed by a secondpull by the toe grip-- per. Under some shoe manufacturing conditions, itis found that the relaxation is unnecessary and a dwell in the toegripper cam groove may replace the raised portion A, followed by adecline corresponding to E to give an additional pull by the toe gripperafter the side grippers have pulled. This arrangement stretches theupper longitudinally over the toe without bridging it over the instep orbowing the tip seam. Should it be desired to repeat the give-andtakepull of the toe gripper, the cam 16 would be provided with a series ofrises such as A A, Fig. 4, one rise being provided for each relaxationof the tension of the toe gripper that is desired. Again if it isconsidered desirable, the tension on the side grippers may be relaxedwhile the toe gripper is pulling the upper, in which case the cam 17which actuates the side grippers would be provided with a contourarranged to effect this motion, as in Fig. 5. This is a furtherdevelopment for repeating the giveand-take movement during a singlecycle of the machine.

The improvement in methods of making shoes herein disclosed is notclaimed in this application but is claimed in divisional applicationSerial No. 850,788, filed July 13, 1914.

Having fully described my invention, I claim as new and desire to secureby Letters Patent of the United States:

1. In a pulling-over machine, toe and side grippers, and connectedmechanism for imparting longitudinal and transverse upper pullingmovements respectively to the toe and the side grippers, said mechanismbeing so arranged that the side grippers are operated to pull or stretchthe upper transversely of the last prior to an operation of the toegripper to pull or stretch it longitudinally of the last.

2. In a pulling-over machine. toe and side grippers, and operatingmechanism therefor arranged to cause the toe gripper to efiect apreliminary pull to position the upper and then to relax its pull uponthe upper prior to the completion of the updraw movement of the sidegrippers.

{3. In a pulling-over machine, toe and side grippers and operatingmechanism therefor arranged to cause the toe gripper to effect apreliminary pull to position the upper and then to relax its pull uponthe upper and in which, for the purpose specified, the preliminarypulling and relaxing movement of the toe gripper and the updraw movementof the side grippers are automatically repeated.

4:. In a pulling-over machine, toe and side grippers. and operatingmechanism therefor arranged to cause the toe gripper to eflect apreliminary pull to position the upper and then to relax its pull uponthe upper and in which, for the purpose specified, the preliminarypulling and relaxing movement of the toe gripper and the updrawnmovement of the side grippers are automatically repeated, and in which,furthermore, between each repetition the side grippers are actuated torelax their pull somewhat.

5. A pulling-over machine having, in combination, toe and side grippers,and operating mechanism therefor including updraw cams for the toe andthe side grippers which are relatively formed and arranged to impartautomatically to one of said grippers upper pulling movements in tWoseparate steps.

6. A pulling-over machine having, in

combination, toe and side grippers, and opcrating mechanism thereforincluding updraw cams for the toe and the side grippers which arerelatively formed and arranged to impart automatically to one of saidgrippers repeated upper pulling movements in the same direction during asingle cycle and to relax the tension automatically between tWo of thesuccessive pulling movements.

7. A pulling-over machine having, in combination, toe and side grippers,and operating mechanism therefor including updraw cams for the toe andthe side grippers, the updraw cam for the toe gripper being formed andarranged relatively to the cam connectedwith the side grippers to raisethe toe gripper first, then lower the toe gripper While the sidegrippers pull, and then again raise the toe gripper to a greater extentthan at first.

8. A pulling-over machine having, in combination, toe and side grippers,and operating mechanism therefor including updraiv cams for the toe andside grippers, the updraw cam for the side grippers being formed andarranged automatically to raise and then loWer and finally to raiseagain the side grippers during a single cycle of the machine forrepeatedly pullingthe upper engaged by the side grippers.

9. A pulling-over machine having, in combination. toe and side grippers,andoperating mechanism therefor including updraiv cams for the toe andthe side grippers to stretch the upper longitudinally and transversely,said cams being formed and arranged to impart a give-and-take movementto the grippers, one gripper being actuated to relax the tension in onedireo tion as the other applies or increases it in the other direction.

10. A pulling-over machine having, in combination, toe and sidegrippers, and operating mechanism therefor including updraW cams for thetoe and the side grippers to stretch the upper longitudinally andtransversely, said cams being formed and arranged to impart agive-and-take movement to the grippers repeatedly during the same cycleof the machine.

11. In a pulling-over machine, toe and side grippers. and connectedmechanism for imparting longitudinal and transverse upper pullingmovements to the toe and side grippers respectively, said mechanismbeing arranged to cause the toe gripper to effeet a preliminary pull toposition the upper longitudinally and then to cease to pull furtherWhile said mechanism causes the side grippers to stretch the uppertransversely of the last, said mechanism also including means to causethe toe gripper to effect an additional pull lengthwise of the shoeafter the side grippers have pulled.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

CHARLES F AWCETT BENNION.

Witnesses:

Fnnnsmo WILLIAM LITE, CLAUD BENNION.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

